With the rapid development of the economy, the widespread use of automobiles, and the increasing environmental pollution, the state has increased its support for the rapid development of new energy vehicles, which has led to the research and development of basic measures for new energy vehicles, charging piles and charging cables, becoming increasingly important. Electric vehicle charging cables are carriers that connect electric vehicles and charging piles, and their basic function is to transmit electrical energy. However, with the development of charging technology, in order to better complete charging, communication between electric vehicles and charging piles is required, and automatic control is performed when necessary. Therefore, cable manufacturers will equip a certain number of signal lines, control lines, power auxiliary lines, etc. to ensure accurate control of the entire charging process and safe operation.
During the entire charging process, the charging pile with the function of communicating with the BMS through the CAN network will determine the battery type, obtain the power battery system parameters, and the status parameters of the power battery before charging and during charging; it can determine whether the charging connector and charging cable are Connect correctly. However, only after the charging connector is correctly connected to the electric vehicle battery system, the charging pile is allowed to start the charging process; when an abnormal connection to the electric vehicle battery system is detected, charging will be stopped immediately and an alarm message will be issued.
The above operations can only be carried out if the charging pile and the charging pile cable have communication and automatic control functions. On the premise of ensuring the basic functions of the charging pile cable, the number of cores of the charging pile cable can be appropriately increased to meet technological innovation; the charging process puts forward higher requirements for the charging cable. The charging cable not only needs to have the function of power transmission, but also It is necessary to transmit the status and information of the vehicle and power battery to the charging pile for real-time interaction, and control the charging action under necessary conditions to complete the charging process safely and reliably.
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